US4187677A - Exhaust port liner support for internal combustion engine - Google Patents

Exhaust port liner support for internal combustion engine Download PDF

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Publication number
US4187677A
US4187677A US05/894,588 US89458878A US4187677A US 4187677 A US4187677 A US 4187677A US 89458878 A US89458878 A US 89458878A US 4187677 A US4187677 A US 4187677A
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US
United States
Prior art keywords
liner
exhaust port
exhaust
port passage
support piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/894,588
Other languages
English (en)
Inventor
Yoshitoshi Sakurai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Application granted granted Critical
Publication of US4187677A publication Critical patent/US4187677A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/26—Construction of thermal reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/02—Surface coverings of combustion-gas-swept parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation

Definitions

  • This invention relates to internal combustion engines and is particularly directed to improvements for supporting exhaust port liners. It has previously been proposed to employ exhaust port liners when it is desired to maintain the exhaust gases at a high temperature for a relatively long period of time, and when there is excess oxygen in the exhaust gases, for the purpose of reducing the amounts of unburned hydrocarbons and carbon monoxide in the gases discharged into the atmosphere.
  • the other known method of supporting the exhaust port liner is to provide the liner with a flange which extends between the cylinder head and another member, for example, an exhaust manifold member.
  • This has the disadvantage, however, that because of pressure changes in the exhaust system, engine vibration, etc., the flange or its contacting surfaces wear away and the liner is left without a firm support.
  • the principal object of this invention is to provide an exhaust port liner support which is free of such disadvantages and which furthermore acts to block flow of exhaust gases in the space between the liner and the surrounding wall of the exhaust port passage in the engine head.
  • FIG. 1 is a sectional side elevation showing a preferred embodiment of this invention.
  • FIG. 2 is a sectional plan view.
  • FIG. 3 is an end view showing one of the liner support pieces.
  • an internal combustion engine generally designated 10 is provided with four cylinders 11, 12, 13 and 14, each having a main combustion chamber 15, and an exhaust valve 16.
  • Exhaust port passages 17, 18, 19 and 20 are provided for the cylinders 11, 12, 13 and 14, respectively.
  • Adjacent exhaust port passages 17 and 18 merge into a dual exhaust passage 22 and, similarly, adjacent exhaust port passages 19 and 20 merge into a dual exhaust passage 23 in the engine head 21.
  • a dual exhaust port liner 24 of thin wall heat resistant material is inserted into position, in the absence of the valves 16, within adjacent exhaust port passages 17 and 18 and extends into the dual exhaust passage 22.
  • the liner 24 is bifurcated so that it has two entrance portions 25 and 26 extending into the exhaust port passages 17 and 18, respectively, but the liner 24 has only a single discharge opening 27 formed within the circular projection 28.
  • the upstream bifurcated ends 29 of the liner 24 may be supported by the surrounding walls of the exhaust port passages 17 and 18, and the major portion of the length of the liner 24 is spaced from the enclosing walls of the engine head 21.
  • the circular projection 28 at the downstream end of each liner 24 is welded into a central opening 31 provided in a flange 32 of a support piece 33, formed of imperforate plate.
  • An outer peripheral skirt 34 on the support piece 33 is tightly fitted into a groove or recess 35 provided at the discharge end of the dual exhaust passage 22 and having a contour larger than the exhaust passage 22.
  • the downstream end of the dual exhaust port liner 24 is thereby firmly fixed in position.
  • the outer skirt 34 has a relatively small contact area with the engine head 21.
  • the support piece 33 serves the further function of blocking flow of exhaust gases around the outside of the liner 24 and within the exhaust port passages 17 and 18 and the dual exhaust passage 22.
  • the circular outer skirt 34 may be fitted into a circularly formed groove or recess only at the upper and lower portions of the exhaust passage to limit the contact area to a minimum.
  • the construction of the dual exhaust port liner 36 and its support piece 37 are substantially the same, respectively, as the liner 24 and its support piece 33.
  • This invention is similarly applicable to an exhaust port liner supported respectively by each exhaust port passage.
  • the exhaust manifold 39 includes an outer housing 41 having relatively thick walls, and within these walls are positioned an upstream reaction chamber 42 supplied through exhaust pipes 43 and 44 aligned respectively with the discharge openings 27 of the dual exhaust port liners 24 and 36.
  • a downstream reaction chamber 45 surrounds and encircles the upstream reaction chamber 42 and each exhaust pipe 43 and 44. Exhaust gases are discharged from the downstream reaction chamber 45 through the discharge pipe 46.
  • exhaust gases from each of the combustion chambers 15 enter the exhaust port passages 17, 18, 19 and 20, in accordance with the firing sequence and operation of the exhaust valves 16.
  • the exhaust gases pass into the bifurcated ends 29 of the entrance portions 25 and 26 of the dual exhaust port liners 24 and 36.
  • the liners are held securely in position by means of the support pieces 33 and free from vibration, so that the liners can be assured of durability.
  • the fact that the contact area between the outer skirt 34 and the engine head 21 is held to a minimum results in restraining excessive drop in temperature of the liner 22 and 36. Since the support pieces prevent flow of exhaust gases around the outside of the liners 24 and 36, cooling of the exhaust gases by contact with walls of the water-cooled engine head is largely prevented. Accordingly, the gases remain hot as they pass through the central discharge openings 27 into the exhaust pipes 43 and 44.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust Silencers (AREA)
US05/894,588 1975-04-22 1978-04-07 Exhaust port liner support for internal combustion engine Expired - Lifetime US4187677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1975054083U JPS5230402Y2 (ja) 1975-04-22 1975-04-22

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US05677665 Continuation 1976-04-16

Publications (1)

Publication Number Publication Date
US4187677A true US4187677A (en) 1980-02-12

Family

ID=12960714

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/894,588 Expired - Lifetime US4187677A (en) 1975-04-22 1978-04-07 Exhaust port liner support for internal combustion engine

Country Status (16)

Country Link
US (1) US4187677A (ja)
JP (1) JPS5230402Y2 (ja)
AR (1) AR213506A1 (ja)
BE (1) BE840660A (ja)
BR (1) BR7602367A (ja)
CA (1) CA1065713A (ja)
CH (1) CH600151A5 (ja)
DD (1) DD124889A5 (ja)
DE (1) DE2616030C2 (ja)
ES (1) ES446941A1 (ja)
FR (1) FR2308788A1 (ja)
GB (1) GB1538336A (ja)
IT (1) IT1057521B (ja)
NL (1) NL164932C (ja)
SE (1) SE7604295L (ja)
SU (1) SU929016A3 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5239956A (en) * 1991-06-07 1993-08-31 Detroit Diesel Corporation Internal combustion engine cylinder heads and similar articles of manufacture and methods of manufacturing same
US6647714B1 (en) * 2002-05-29 2003-11-18 Ghl Motorsports, L.L.C. Exhaust header system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51126410A (en) * 1975-04-25 1976-11-04 Nissan Motor Co Ltd Internal combustion engine
JPS5416970Y2 (ja) * 1975-09-01 1979-07-02
EP2532869B1 (de) * 2011-06-10 2023-09-13 Ford Global Technologies, LLC Brennkraftmaschine mit mindestens vier in Reihe angeordneten Zylindern
DE102012200014A1 (de) * 2012-01-02 2013-07-04 Ford Global Technologies, Llc Mehrzylinder-Brennkraftmaschine undVerfahren zum Betreiben einer derartigen Mehrzylinder-Brennkraftmaschine
DE102017111262A1 (de) * 2017-05-23 2018-11-29 Man Truck & Bus Ag Wärmeisoliertes Lufteinlasssystem für einen Verbrennungsmotor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2257631A (en) * 1939-11-13 1941-09-30 Nash Kelvinator Corp Internal combustion engine
US2260656A (en) * 1940-02-27 1941-10-28 Kenyon F Lee Exhaust port liner
US3850453A (en) * 1972-10-04 1974-11-26 Questor Corp Method and apparatus for connecting insulating conduits
DE2323793A1 (de) * 1973-05-11 1974-11-28 Kloeckner Humboldt Deutz Ag Auslass- und/oder einlasskanal eines zylinderkopfes fuer luftgekuehlte hubkolbenbrennkraftmaschinen
US3969893A (en) * 1973-10-15 1976-07-20 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas emission control device for multi-cylinder engines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE338208B (ja) * 1970-10-19 1971-08-30 O Peltomaeki

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2257631A (en) * 1939-11-13 1941-09-30 Nash Kelvinator Corp Internal combustion engine
US2260656A (en) * 1940-02-27 1941-10-28 Kenyon F Lee Exhaust port liner
US3850453A (en) * 1972-10-04 1974-11-26 Questor Corp Method and apparatus for connecting insulating conduits
DE2323793A1 (de) * 1973-05-11 1974-11-28 Kloeckner Humboldt Deutz Ag Auslass- und/oder einlasskanal eines zylinderkopfes fuer luftgekuehlte hubkolbenbrennkraftmaschinen
US3969893A (en) * 1973-10-15 1976-07-20 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas emission control device for multi-cylinder engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5239956A (en) * 1991-06-07 1993-08-31 Detroit Diesel Corporation Internal combustion engine cylinder heads and similar articles of manufacture and methods of manufacturing same
US5354608A (en) * 1991-06-07 1994-10-11 Detroit Diesel Corporation Internal combustion engine cylinder heads and similar articles of manufacture and methods of manufacturing same
US6647714B1 (en) * 2002-05-29 2003-11-18 Ghl Motorsports, L.L.C. Exhaust header system

Also Published As

Publication number Publication date
IT1057521B (it) 1982-03-30
JPS51153306U (ja) 1976-12-07
NL164932C (nl) 1981-02-16
ES446941A1 (es) 1977-06-01
AU1296376A (en) 1977-10-20
DD124889A5 (ja) 1977-03-16
BR7602367A (pt) 1976-10-19
CA1065713A (en) 1979-11-06
FR2308788B1 (ja) 1981-02-27
DE2616030A1 (de) 1976-11-04
NL7603850A (nl) 1976-10-26
DE2616030C2 (de) 1982-07-08
FR2308788A1 (fr) 1976-11-19
CH600151A5 (ja) 1978-06-15
SE7604295L (sv) 1976-10-23
SU929016A3 (ru) 1982-05-15
BE840660A (fr) 1976-10-12
GB1538336A (en) 1979-01-17
JPS5230402Y2 (ja) 1977-07-12
AR213506A1 (es) 1979-02-15

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